Elevator electric control operation rod

Abstract

The invention discloses an elevator electric control operation rod. A bottom plate is arranged in an elevator operation table. A rotating shaft is arranged on the bottom plate. An operation rod is arranged at one end of the rotating shaft. A microswitch cam and a displacement sensor cam are arranged on the portions, on the two sides of the bottom plate, of the rotating shaft respectively. A zero-position notch is formed in the microswitch cam. A zero-position microswitch switch, an elevating microswitch and a descending microswitch are arranged on the portion, on one side of the microswitch cam, on the bottom plate. The contact of the zero-position microswitch is clamped in the zero-position notch. A displacement sensor is arranged on the portion, on one side of the displacement sensor cam, on the bottom plate. The zero-position microswitch, the elevating microswitch, the descending microswitch and the displacement sensor cam are connected to an elevator electric control circuit. The elevator electric control operation rod has the advantages that the advanced sensor technology and machines are integrated, and therefore performance and stability are hundreds of times better than those of an ordinary operation rod; due to the adoption of the non-contact displacement sensor technology, the elevator electric control operation rod is not prone to damage; no exposed circuit board is arranged, and therefore the anti-interference performance is far better than that of the ordinary operation rod; the elevator electric control operation rod is simple in circuit and free of maintenance.

Description

technical field [0001] The invention relates to an electric control operation device for a hoist. Background technique [0002] At present, the operating levers on the market use potentiometers as the main components. The potentiometer is a sliding resistor. Since the moving contact of the sliding resistor moves back and forth all the time, it is easy to be damaged over time, and the reliability is very low. Adjust the center position of the potentiometer. It is a very difficult thing, the center position is not adjusted properly, and the starting speed is very difficult to control, which is related to the safety performance of the hoist. Because the hoist is the bottleneck equipment of the coal mine, if there is a problem with the operating lever, the entire hoist will be paralyzed, and the entire mine will face shutdown, so the operating lever is the most critical equipment. Contents of the invention [0003] The purpose of the present invention is to provide an electri...

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Problems solved by technology

[0002] At present, the operating levers on the market use potentiometers as the main components. The potentiometer is a sliding resistor. Since the moving contact of the sliding resistor moves back and forth all the time, it is easy to be damaged over time, and the reliability is very low. Adjust the center position of the potentiometer. It is a very difficult thing. The center position is not adjusted properly, and the starting speed is very difficult to control, which is related to the safety performance of the hoist.

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